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    <title>Document</title>
    <style>
        div {
            width: 100px;
            height: 100px;
            
        }
        [highlight-add]{
            color: red;
        }
        [highlight]{
            color: green;
        }
        [highlight-add-single] {
            color: yellow;
        }
    </style>
</head>

<body>
    <div>
        <h4>hahha</h4>
        <p class="hhh">我是一个p</p>
        <p>我是一个p</p>
        <p>我是一个p</p>
    </div>
    <div>
        <h4>hahha</h4>
        <p>我是一个p</p>
        <p>我是一个p</p>
        <p>我是一个p</p>
    </div>
    <div>
        <h4>hahha</h4>
        <p>我是一个p</p>
        <p>我是一个p</p>
        <p>我是一个p</p>
    </div>
    <script src="./xpath.js"></script>
    <script src="./operation.js"></script>
    <script>
        document.body.oncontextmenu = function () {
            return false
        }    
    </script>
</body>

</html>